luoguP1003 铺地毯 题解(NOIP2011)

luoguP1003 铺地毯  题目

#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<iostream>
#include<algorithm>
#include<cmath>
using namespace std;
inline int read()
{
    int sum=0,p=1;char ch=getchar();
    while(!(('0'<=ch && ch<='9') || ch=='-'))ch=getchar();
    if(ch=='-')p=-1,ch=getchar();
    while('0'<=ch && ch<='9')sum=sum*10+ch-48,ch=getchar();
    return sum*p;
}
struct ditan{
    int zxx,zxy,ysx,ysy;
}a[10001];
int main()
{
    int n,xx,yy,lx,ly,x,y;
    n=read();
    for(int i=1;i<=n;i++)
    {
        xx=read();yy=read();lx=read();ly=read();
        a[i].zxx=xx;a[i].zxy=yy;a[i].ysx=xx+lx;a[i].ysy=yy+ly;
    }
    x=read();y=read();
    for(int i=n;i>=1;i--)
    {
        if(a[i].zxx<=x&&a[i].zxy<=y&&a[i].ysx>=x&&a[i].ysy>=y)
        {
            cout<<i<<endl;
            return 0;
        }
    }
    cout<<"-1"<<endl;
    return 0;
}